C# Double Buffer reduce flicker

Example： （VS2005  .Net Framework2.0）

        public Form1()
        {
            InitializeComponent();

            this.SetStyle(ControlStyles.OptimizedDoubleBuffer |
                ControlStyles.AllPaintingInWmPaint |
                ControlStyles.UserPaint,
                true);
            this.UpdateStyles();
        }

        private void Form1_Paint(object sender, PaintEventArgs e)
        {
            for (int i = 0; i < 1000; i++)
                e.Graphics.DrawLine(Pens.Red, 120, i + 10, 100, 100);

　　　　 // Use double buffer manually
            BufferedGraphicsContext currentContext;
            BufferedGraphics myBuffer;
            currentContext = BufferedGraphicsManager.Current;
            myBuffer = currentContext.Allocate(this.CreateGraphics(), this.DisplayRectangle);
            myBuffer.Graphics.Clear(this.BackColor);
            for (int i = 0; i < 1000; i++)
                myBuffer.Graphics.DrawLine(Pens.Red, 120, i + 10, 100, 100);
            myBuffer.Render();
            myBuffer.Dispose();
        }

1. 橙色的代码必须一起使用才能利用.Net提供的double buffer 机制，减少闪烁，SetStyle 的作用很大。此外，SetStyle必须用于control类型。

2. 如果想要自己利用Double Buffer, 可参考绿色代码。